They expect the manager to do what they do in FIFA on easy mode or last year's FM with the in-game editor, foreknowledge of all the best wonderkids and a plug and play engine-breaking tactic someone else came up with. Buy top wonderkids for bargain bin prices, have all of the transfers pan out immediately and challenge for the title from matchweek 1, as if that's at all easy or even possible in reality. There is literally nothing anyone could realistically do to run this club without these people pissing and shitting the bed about it 24/7. Any player who isn't world class immediately is shite, and if they cost more than they would have 20 years ago it's a bad purchase. If we don't buy the specific player they personally decided we needed from scouting youtube compilations, it's a terrible purchase and the player is shite unless he scores a goal every match.
The Glazers basically deal with managers the way most fans want them to: first year top 4, title challenge thereafter or you're sacked even if the squad is mediocre, even if you're also expected to completely change the play style. At the same time everyone wonders why every manager makes desperate purchases, spending the entire transfer budget every year even on transfers which are terrible value. The answer is that because you get sacked at the first sign of trouble, every point in the league is life and death. There is no point waiting until a later window for a better value purchase or selling a player a little bit early for a bigger budget in the next window, because if you lose a few matches that you would have won instead of spending way too much money on a stopgap solution, you still get sacked and the next manager gets to spend that money instead.
The "We need a DoF" crowd are also clueless, and you can tell from the way they talk about it. They're furious with every player purchased if there's even a hint of the manager having a say in it. The would prefer that we lock the manager in a sensory deprivation chamber during the transfer windows and only buy players he doesn't want. They also ignore that United have had DoF's for a while, Woodward and Murtough. A DoF is just a management structure, it's no guarantee of success, DoF's can make mistakes and be incompetent just like managers can, and they will also act in their own short term interests if you give them an incentive to do so.
Even with all this in mind, EtH and Murtough's transfers haven't been skewed to the short term. Casemiro and Eriksen are older but all the other transfers in are younger players. A few of them have failed to hit the ground running but still have a chance to improve. I think Mount is a pretty shrewd signing for a role that, if we didn't already need with Eriksen slowing down so much, we would have needed next season and for which we would have had to pay a lot more. Too many people here have decided that we have to play with 2 holding midfielders despite no other top teams doing it, and it's still an option anyways when Mainoo recovers from his injury. Onana already looks very good, and we got him for a relative bargain (look at what Kepa and Alisson went for, and they were purchased years ago). I'm glad we didn't get tied up in the Caicedo bidding war and I can almost guarantee the wages and term that Caicedo gets for Chelsea along with that ridiculous fee would have been the subject of intense ridicule had United paid it, even from the posters here who are so convinced we needed to buy him.